1621147470040 has 64 divisors (see below), whose sum is σ = 4176855201600. Its totient is φ = 554729952768.

The previous prime is 1621147470031. The next prime is 1621147470073. The reversal of 1621147470040 is 400747411261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5544919 + ... + 5829958.

It is an arithmetic number, because the mean of its divisors is an integer number (65263362525).

Almost surely, 2^{1621147470040} is an apocalyptic number.

1621147470040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1621147470040 is an abundant number, since it is smaller than the sum of its proper divisors (2555707731560).

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

1621147470040 is a wasteful number, since it uses less digits than its factorization.

1621147470040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11375404 (or 11375400 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 1621147470040 in words is "one trillion, six hundred twenty-one billion, one hundred forty-seven million, four hundred seventy thousand, forty".