2156054390437 has 8 divisors (see below), whose sum is σ = 2245300151040. Its totient is φ = 2068039606080.

The previous prime is 2156054390429. The next prime is 2156054390449. The reversal of 2156054390437 is 7340934506512.

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 2156054390437 - 2³ = 2156054390429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156054390137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307740487 + ... + 307747492.

It is an arithmetic number, because the mean of its divisors is an integer number (280662518880).

Almost surely, 2^{2156054390437} is an apocalyptic number.

It is an amenable number.

2156054390437 is a deficient number, since it is larger than the sum of its proper divisors (89245760603).

2156054390437 is a wasteful number, since it uses less digits than its factorization.

2156054390437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615488123.

The product of its (nonzero) digits is 2721600, while the sum is 49.

Adding to 2156054390437 its reverse (7340934506512), we get a palindrome (9496988896949).

The spelling of 2156054390437 in words is "two trillion, one hundred fifty-six billion, fifty-four million, three hundred ninety thousand, four hundred thirty-seven".