61452251640156 has 96 divisors (see below), whose sum is σ = 158025176644608. Its totient is φ = 18468387383040.

The previous prime is 61452251640133. The next prime is 61452251640211. The reversal of 61452251640156 is 65104615225416.

It is a happy number.

It is a super-2 number, since 2×61452251640156² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4934995 + ... + 12135018.

It is an arithmetic number, because the mean of its divisors is an integer number (1646095590048).

Almost surely, 2^{61452251640156} is an apocalyptic number.

It is an amenable number.

61452251640156 is an abundant number, since it is smaller than the sum of its proper divisors (96572925004452).

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

61452251640156 is a wasteful number, since it uses less digits than its factorization.

61452251640156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17070571 (or 17070569 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 61452251640156 in words is "sixty-one trillion, four hundred fifty-two billion, two hundred fifty-one million, six hundred forty thousand, one hundred fifty-six".