40770420155 has 4 divisors (see below), whose sum is σ = 48924504192. Its totient is φ = 32616336120.

The previous prime is 40770420143. The next prime is 40770420217. The reversal of 40770420155 is 55102407704.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40770420155 - 2¹⁴ = 40770403771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077042011 + ... + 4077042020.

It is an arithmetic number, because the mean of its divisors is an integer number (12231126048).

Almost surely, 2^40770420155 is an apocalyptic number.

40770420155 is a deficient number, since it is larger than the sum of its proper divisors (8154084037).

40770420155 is an equidigital number, since it uses as much as digits as its factorization.

40770420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8154084036.

The product of its (nonzero) digits is 39200, while the sum is 35.

Adding to 40770420155 its reverse (55102407704), we get a palindrome (95872827859).

The spelling of 40770420155 in words is "forty billion, seven hundred seventy million, four hundred twenty thousand, one hundred fifty-five".