3454561638072 has 80 divisors (see below), whose sum is σ = 9676379239560. Its totient is φ = 1151471992896.

The previous prime is 3454561638013. The next prime is 3454561638247. The reversal of 3454561638072 is 2708361654543.

3454561638072 is a `hidden beast` number, since 3 + 4 + 5 + 4 + 561 + 6 + 3 + 8 + 0 + 72 = 666.

It is a super-2 number, since 2×3454561638072² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17362738 + ... + 17560574.

Almost surely, 2^{3454561638072} is an apocalyptic number.

It is an amenable number.

3454561638072 is an abundant number, since it is smaller than the sum of its proper divisors (6221817601488).

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

3454561638072 is a wasteful number, since it uses less digits than its factorization.

3454561638072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224802 (or 224789 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 3454561638072 in words is "three trillion, four hundred fifty-four billion, five hundred sixty-one million, six hundred thirty-eight thousand, seventy-two".