61001653531 has 8 divisors (see below), whose sum is σ = 75078958304. Its totient is φ = 48265044480.

The previous prime is 61001653507. The next prime is 61001653541. The reversal of 61001653531 is 13535610016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61001653531 - 2²⁹ = 60464782619 is a prime.

It is a super-2 number, since 2×61001653531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61001653493 and 61001653502.

It is not an unprimeable number, because it can be changed into a prime (61001653501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 335173830 + ... + 335174011.

It is an arithmetic number, because the mean of its divisors is an integer number (9384869788).

Almost surely, 2^61001653531 is an apocalyptic number.

61001653531 is a deficient number, since it is larger than the sum of its proper divisors (14077304773).

61001653531 is a wasteful number, since it uses less digits than its factorization.

61001653531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670347861.

The product of its (nonzero) digits is 8100, while the sum is 31.

The spelling of 61001653531 in words is "sixty-one billion, one million, six hundred fifty-three thousand, five hundred thirty-one".