156420453541 has 6 divisors (see below), whose sum is σ = 171933225926. Its totient is φ = 142200412200.

The previous prime is 156420453487. The next prime is 156420453557. The reversal of 156420453541 is 145354024651.

It can be written as a sum of positive squares in only one way, i.e., 146022572641 + 10397880900 = 382129^2 + 101970^2 .

It is a de Polignac number, because none of the positive numbers 2^k-156420453541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156420453494 and 156420453503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156420451541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 646365390 + ... + 646365631.

Almost surely, 2^156420453541 is an apocalyptic number.

156420453541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156420453541 is a deficient number, since it is larger than the sum of its proper divisors (15512772385).

156420453541 is a wasteful number, since it uses less digits than its factorization.

156420453541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292731043 (or 1292731032 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

It can be divided in two parts, 156420 and 453541, that added together give a square (609961 = 781²).

The spelling of 156420453541 in words is "one hundred fifty-six billion, four hundred twenty million, four hundred fifty-three thousand, five hundred forty-one".