153961656 has 64 divisors (see below), whose sum is σ = 409082400. Its totient is φ = 48119808.

The previous prime is 153961637. The next prime is 153961657. The reversal of 153961656 is 656169351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153961657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143490 + ... + 144558.

Almost surely, 2^153961656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 153961656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204541200).

153961656 is an abundant number, since it is smaller than the sum of its proper divisors (255120744).

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

153961656 is a wasteful number, since it uses less digits than its factorization.

153961656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1444 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 153961656 is about 12408.1286260258. The cubic root of 153961656 is about 535.9663508244.

The spelling of 153961656 in words is "one hundred fifty-three million, nine hundred sixty-one thousand, six hundred fifty-six".