1621115242460 has 36 divisors (see below), whose sum is σ = 3960152951832. Its totient is φ = 555810939936.

The previous prime is 1621115242459. The next prime is 1621115242463. The reversal of 1621115242460 is 642425111261.

It is a super-2 number, since 2×1621115242460² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1621115242460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621115242463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 827098634 + ... + 827100593.

It is an arithmetic number, because the mean of its divisors is an integer number (110004248662).

Almost surely, 2^{1621115242460} is an apocalyptic number.

1621115242460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1621115242460 is an abundant number, since it is smaller than the sum of its proper divisors (2339037709372).

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

1621115242460 is a wasteful number, since it uses less digits than its factorization.

1621115242460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654199250 (or 1654199241 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 1621115242460 in words is "one trillion, six hundred twenty-one billion, one hundred fifteen million, two hundred forty-two thousand, four hundred sixty".