72061332542144 has 112 divisors (see below), whose sum is σ = 163648492819200. Its totient is φ = 31180230681600.

The previous prime is 72061332542113. The next prime is 72061332542161. The reversal of 72061332542144 is 44124523316027.

It is a happy number.

It is a super-2 number, since 2×72061332542144² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 72061332542095 and 72061332542104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23407154 + ... + 26306225.

Almost surely, 2^{72061332542144} is an apocalyptic number.

It is an amenable number.

72061332542144 is an abundant number, since it is smaller than the sum of its proper divisors (91587160277056).

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

72061332542144 is a wasteful number, since it uses less digits than its factorization.

72061332542144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49713502 (or 49713492 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 72061332542144 in words is "seventy-two trillion, sixty-one billion, three hundred thirty-two million, five hundred forty-two thousand, one hundred forty-four".