40621535554 has 4 divisors (see below), whose sum is σ = 60932303334. Its totient is φ = 20310767776.

The previous prime is 40621535531. The next prime is 40621535579. The reversal of 40621535554 is 45553512604.

40621535554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 40082042025 + 539493529 = 200205^2 + 23227^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155383887 + ... + 10155383890.

Almost surely, 2^40621535554 is an apocalyptic number.

40621535554 is a deficient number, since it is larger than the sum of its proper divisors (20310767780).

40621535554 is a wasteful number, since it uses less digits than its factorization.

40621535554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20310767779.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 40621535554 in words is "forty billion, six hundred twenty-one million, five hundred thirty-five thousand, five hundred fifty-four".