20274078552 has 256 divisors, whose sum is σ = 67304079360. Its totient is φ = 4937048064.

The previous prime is 20274078533. The next prime is 20274078593. The reversal of 20274078552 is 25587047202.

It is a super-2 number, since 2×20274078552² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1962633 + ... + 1972935.

It is an arithmetic number, because the mean of its divisors is an integer number (262906560).

Almost surely, 2^20274078552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20274078552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33652039680).

20274078552 is an abundant number, since it is smaller than the sum of its proper divisors (47030000808).

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

20274078552 is a wasteful number, since it uses less digits than its factorization.

20274078552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10402 (or 10398 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 42.

The spelling of 20274078552 in words is "twenty billion, two hundred seventy-four million, seventy-eight thousand, five hundred fifty-two".