400523115653253 has 16 divisors (see below), whose sum is σ = 593370074880960. Its totient is φ = 267014287174608.

The previous prime is 400523115653179. The next prime is 400523115653263. The reversal of 400523115653253 is 352356511325004.

400523115653253 is a `hidden beast` number, since 4 + 0 + 0 + 5 + 2 + 3 + 1 + 1 + 565 + 32 + 53 = 666.

It is not a de Polignac number, because 400523115653253 - 2¹⁶ = 400523115587717 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400523115653199 and 400523115653208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400523115653263) 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, 24639450 + ... + 37525307.

It is an arithmetic number, because the mean of its divisors is an integer number (37085629680060).

Almost surely, 2^{400523115653253} is an apocalyptic number.

It is an amenable number.

400523115653253 is a deficient number, since it is larger than the sum of its proper divisors (192846959227707).

400523115653253 is a wasteful number, since it uses less digits than its factorization.

400523115653253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62403393 (or 62403387 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

Adding to 400523115653253 its reverse (352356511325004), we get a palindrome (752879626978257).

The spelling of 400523115653253 in words is "four hundred trillion, five hundred twenty-three billion, one hundred fifteen million, six hundred fifty-three thousand, two hundred fifty-three".