1515663426420 has 1152 divisors, whose sum is σ = 5752761315840. Its totient is φ = 328944844800.

The previous prime is 1515663426419. The next prime is 1515663426439. The reversal of 1515663426420 is 246243665151.

1515663426420 is a `hidden beast` number, since 1 + 5 + 1 + 5 + 6 + 634 + 2 + 6 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 5897522932 + ... + 5897523188.

It is an arithmetic number, because the mean of its divisors is an integer number (4993716420).

Almost surely, 2^{1515663426420} is an apocalyptic number.

1515663426420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1515663426420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2876380657920).

1515663426420 is an abundant number, since it is smaller than the sum of its proper divisors (4237097889420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1515663426420 is a wasteful number, since it uses less digits than its factorization.

1515663426420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 1515663426420 in words is "one trillion, five hundred fifteen billion, six hundred sixty-three million, four hundred twenty-six thousand, four hundred twenty".