81061496 has 16 divisors (see below), whose sum is σ = 157231800. Its totient is φ = 39133024.

The previous prime is 81061483. The next prime is 81061517. The reversal of 81061496 is 69416018.

It is a super-2 number, since 2×81061496² = 13141932267516032, which 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 3 ways as a sum of consecutive naturals, for example, 174470 + ... + 174933.

Almost surely, 2^81061496 is an apocalyptic number.

It is an amenable number.

81061496 is a deficient number, since it is larger than the sum of its proper divisors (76170304).

81061496 is a wasteful number, since it uses less digits than its factorization.

81061496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349438 (or 349434 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 81061496 is about 9003.4157962409. The cubic root of 81061496 is about 432.7843404053.

The spelling of 81061496 in words is "eighty-one million, sixty-one thousand, four hundred ninety-six".